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‎src/main/java/LadderSimulator.java

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import java.util.List;
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import model.Ladder;
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import model.Person;
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import util.InputParser;
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import view.InputView;
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import view.OutPutView;
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public class LadderSimulator {
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private Ladder ladder;
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private int height;
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private int width;
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public void start() {
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processLadderInput();
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processLadderPersonMove();
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processLadderResult();
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}
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private void processLadderInput() {
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List<Person> persons = InputParser.parsePersons(InputView.inputPersons());
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List<String> results = InputParser.parseResults(InputView.inputResults());
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height = InputParser.parseLadderHeight(InputView.inputLadderHeight());
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width = persons.size() - 1;
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this.ladder = new Ladder(height, width, persons, results);
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OutPutView.printLadder(ladder);
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}
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private void processLadderPersonMove() {
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for (Person person : ladder.getPersons()) {
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PersonMovement(person);
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}
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}
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private void processLadderResult() {
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while (true) {
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String resultPersonName = InputView.inputResultPerson();
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if (resultPersonName.equals("all")) { // all 입력시 모든 사람의 결과 출력
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OutPutView.printLadderResult(ladder);
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return;
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}
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Person resultPerson = ladder.getPersonByName(resultPersonName);
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OutPutView.printPersonResult(resultPerson, ladder);
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}
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}
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// 우측우선이동임
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private void personMovement(Person person) {
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for (int nowHeight = 0; nowHeight < height; nowHeight++) {
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if (canMoveRight(person, ladder, nowHeight)) {
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person.moveRight();
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continue;
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}
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if (canMoveLeft(person, ladder, nowHeight)) {
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person.moveLeft();
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continue;
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}
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}
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}
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private boolean canMoveLeft(Person person, Ladder ladder, int nowHeight) {
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return person.getPosition() > 0 && ladder.isPoint(nowHeight, person.getPosition() - 1);
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}
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private boolean canMoveRight(Person person, Ladder ladder, int nowHeight) {
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return person.getPosition() < width && ladder.isPoint(nowHeight, person.getPosition());
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}
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}

‎src/main/java/Main.java

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public class Main {
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public static void main(String[] args) {
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LadderSimulator simulator = new LadderSimulator();
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simulator.start();
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}
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}

‎src/main/java/model/Ladder.java

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package model;
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import java.util.List;
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import java.util.stream.Stream;
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public class Ladder {
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private final List<Line> lines;
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private List<Person> persons;
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private List<String> results;
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public Ladder(int height, int width, List<Person> persons, List<String> results) {
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this.lines = Stream.generate(() -> new Line(width))
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.limit(height)
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.toList();
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this.persons = persons;
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this.results = results;
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}
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public List<Line> getLines() {
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return lines;
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}
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public List<Person> getPersons() {
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return persons;
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}
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public List<String> getResults() {
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return results;
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}
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public boolean isPoint(int lineIndex, int pointIndex) {
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if (lineIndex < 0 || lineIndex >= lines.size()) {
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throw new IndexOutOfBoundsException("인덱스 범위 초과");
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}
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return lines.get(lineIndex).isPoint(pointIndex);
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}
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public Person getPersonByName(String name) {
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return persons.stream()
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.filter(person -> person.getName().equals(name))
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.findFirst()
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.orElseThrow(() -> new IllegalArgumentException("해당 이름의 사람이 없습니다: "));
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}
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}

‎src/main/java/model/Line.java

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package model;
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import java.util.List;
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import util.LadderRandomGenerator;
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public class Line {
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private final List<Boolean> points;
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public Line(int length) {
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this.points = LadderRandomGenerator.generateRandomLine(length);
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}
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public List<Boolean> getPoints() {
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return points;
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}
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public boolean isPoint(int index) {
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if (index < 0 || index >= points.size()) {
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throw new IndexOutOfBoundsException("인덱스 범위 초과");
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}
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return points.get(index);
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}
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@Override
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public String toString() {
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StringBuilder sb = new StringBuilder();
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for (Boolean point : points) {
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sb.append("|");
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sb.append(point ? "-----" : " ");
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}
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sb.append("|");
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return sb.toString();
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}
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}

‎src/main/java/model/Person.java

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package model;
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import java.util.List;
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public class Person {
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private final String name;
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private int position;
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public Person(String name, int position) {
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this.name = name;
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this.position = position;
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}
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public String getName() {
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return name;
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}
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public int getPosition() {
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return position;
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}
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public void moveLeft() {
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position--;
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}
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public void moveRight() {
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position++;
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}
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public static List<Person> fromNames(List<String> names) {
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return names.stream()
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.map(name -> new Person(name, names.indexOf(name)))
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.toList();
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}
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}

‎src/main/java/util/InputParser.java

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package util;
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import java.util.Arrays;
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import java.util.List;
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import model.Person;
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public class InputParser {
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public static int parseLadderHeight(String input) {
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LadderVaildator.validateLadderHeight(input);
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return Integer.parseInt(input);
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}
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public static int parseLadderWidth(String input) {
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LadderVaildator.validateLadderWidth(input);
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return Integer.parseInt(input);
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}
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public static List<Person> parsePersons(String input) {
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LadderVaildator.validatePersons(input);
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String[] names = input.split(",");
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return Person.fromNames(Arrays.asList(names));
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}
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public static List<String> parseResults(String input) {
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LadderVaildator.validateResults(input);
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return Arrays.asList(input.split(","));
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}
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}

‎src/main/java/util/LadderRandomGenerator.java

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package util;
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import java.util.List;
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import java.util.stream.Stream;
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public class LadderRandomGenerator {
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public static boolean generateRandomBoolean() {
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return Math.random() < 0.5;
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}
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public static List<Boolean> generateRandomLine(int length) {
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return Stream.generate(LadderRandomGenerator::generateRandomBoolean)
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.limit(length)
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.toList();
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}
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}

‎src/main/java/util/LadderVaildator.java

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package util;
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public class LadderVaildator {
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public static void validateLadderHeight(String height) {
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if (height == null || height.isEmpty()) {
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throw new IllegalArgumentException("사다리 높이는 비어있을 수 없습니다.");
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}
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if (height.matches("\\D+")) {
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throw new IllegalArgumentException("사다리 높이는 숫자로 입력해야 합니다.");
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}
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int heightValue = Integer.parseInt(height);
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if (heightValue <= 0) {
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throw new IllegalArgumentException("사다리 높이는 0보다 큰 숫자여야 합니다.");
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}
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}
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public static void validateLadderWidth(String width) {
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if (width == null || width.isEmpty()) {
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throw new IllegalArgumentException("사다리 넓이는 비어있을 수 없습니다.");
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}
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if (width.matches("\\D+")) {
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throw new IllegalArgumentException("사다리 넓이는 숫자로 입력해야 합니다.");
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}
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int widthValue = Integer.parseInt(width);
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if (widthValue <= 0) {
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throw new IllegalArgumentException("사다리 넓이는 0보다 큰 숫자여야 합니다.");
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}
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}
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public static void validatePersons(String persons) {
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if (persons == null || persons.isEmpty()) {
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throw new IllegalArgumentException("참여자 이름은 비어있을 수 없습니다.");
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}
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}
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public static void validateResults(String results) {
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if (results == null || results.isEmpty()) {
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throw new IllegalArgumentException("실행 결과는 비어있을 수 없습니다.");
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}
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}
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}

‎src/main/java/view/InputView.java

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package view;
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import java.util.Scanner;
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public class InputView {
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private static final Scanner scanner = new Scanner(System.in);
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public static String inputLadderHeight() {
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System.out.print("사다리의 높이는 몇 개인가요?");
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return scanner.nextLine();
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}
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public static String inputPersons() {
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System.out.print("참여할 사람 이름을 입력하세요. (이름은 쉼표(,)로 구분하세요)");
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return scanner.nextLine();
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}
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public static String inputResults() {
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System.out.print("실행 결과를 입력하세요. (결과는 쉼표(,)로 구분하세요)");
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return scanner.nextLine();
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}
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public static String inputResultPerson() {
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System.out.print("결과를 보고 싶은 사람은?");
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return scanner.nextLine();
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}
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}

‎src/main/java/view/OutPutView.java

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package view;
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import java.util.List;
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import model.Ladder;
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import model.Line;
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import model.Person;
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public class OutPutView {
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public static void printLadder(Ladder ladder) {
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List<Line> lines = ladder.getLines();
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System.out.println("사다리 결과");
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for (Person person : ladder.getPersons()) {
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System.out.print(person.getName() + " ");
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}
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System.out.println();
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for (Line line : lines) {
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System.out.println(line);
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}
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for (String result : ladder.getResults()) {
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System.out.print(result + " ");
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}
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System.out.println();
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}
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public static void printLadderResult(Ladder ladder) {
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System.out.println("실행 결과");
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for (Person person : ladder.getPersons()) {
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System.out.println(person.getName() + " : " + ladder.getResults().get(person.getPosition()));
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}
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}
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public static void printPersonResult(Person person, Ladder ladder) {
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System.out.println(ladder.getResults().get(person.getPosition()));
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}
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}

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